South Korea's disgraced former President Park Geun-hye was arrested and jailed Friday over the corruption allegations that already ended her tumultuous four-year rule and prompted an election to find a successor.

A convoy of vehicles, including a black sedan carrying Park, entered a detention facility near Seoul before dawn after the Seoul Central District Court granted a prosecutors' request to arrest her.

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Many Park supporters waved national flags and shouted "president" as Park's car entered the facility. An opponent held up a mock congratulatory ribbon with flowers that read "Park Geun-hye, congratulations for entering prison. Come out as a human being after 30 years."

Prosecutors can detain Park for up to 20 days, during which they are expected to formally charge her and have her jailed during the next several months of court procedures. A district court in South Korea normally issues a ruling within six months of an indictment.

The detention is yet another humiliation for Park, South Korea's first female president who was elected in 2012 with overwhelming support from conservatives, who recall her late dictator father as a hero who lifted the country from poverty in the 1960-70s despite a record of severe human rights abuses.

Prosecutors accuse Park of colluding with a confidante to extort big businesses, take a bribe from one of the companies and commit other wrongdoing. The allegations led millions of South Koreans to protest in the streets every weekend for months before lawmakers impeached her in December and the Constitutional Court ruled in March to formally remove her from office.

It made Park the country's first democratically elected leader to be forced from office since democracy came here in the late 1980s. South Korea will hold an election in May to choose Park's successor. Opinion surveys say liberal opposition leader Moon Jae-in, who lost the 2012 election to Park, is the favorite.

Moon's camp said South Korea took a step toward restoring "justice and common sense." Park's battered ruling party described her arrest as "pitiful."

Prosecutors can charge Park without arresting her. But they said they wanted to arrest her because the allegations against her are "grave" and because other suspects involved the scandal, including her confidante Choi Soon-sil and Samsung heir Lee Jae-yong, have already been arrested.

The Seoul court said it decided to approve Park's arrest because it believes key allegations against her were confirmed and there were worries that she may try to destroy evidence.

Surveys had showed about 70 percent of South Koreans would support Park's arrest. After Park was jailed, some said she deserved it while others expressed sympathy for their ex-leader.

"It is pitiful that she ended up being like this," Kim In-sook, 82, said, watching a special TV program on Park at Seoul's railway station on Friday. Nearby, 77-year-old Park Seong-woo said that prosecutors and the court have done the right thing to do.

A day earlier, Park was questioned at a court hearing for nearly nine hours. As she left for the hearing, hundreds of her supporters, many of them elderly citizens, gathered at her private Seoul home. They wept, chanted slogans and tried to block Park's car before being pushed back by police.

Park is expected to face charges of extortion, bribery and abuse of power. A conviction for bribery alone has a minimum sentence of 10 years in prison and maximum of life imprisonment in South Korea.

Prosecutors believe Park conspired with Choi and a top presidential adviser to bully 16 business groups, including Samsung, to donate 77.4 billion won ($69 million) for the launch of two nonprofits that Choi controlled. Company executives said they felt forced to donate in fear of retaliatory measures including state tax investigations.

Park and Choi are accused of separately receiving a bribe from Samsung and colluding with top officials to blacklist artists critical of Park's policies to deny them state financial assistance programs, according to prosecutors. Park also is alleged to have passed on state secrets to Choi via a presidential aide.

Park and Choi deny most of the allegations. Park has said she only let Choi edit some of her presidential speeches and got her help on "public relations" issues. Choi made similar statements.

The women, both in their 60s, have been friends for 40 years. Park once described Choi as someone who helped her when she had "difficulties," an apparent reference to her parents' assassinations in the 1970s.

Park's father, Chung-hee, was gunned down by his own intelligence chief in 1979, five years after his wife was killed in an assassination attempt that targeted him. Park Geun-hye served as first lady after her mother's death.

After her father's killing, Park Geun-hye left the presidential Blue House and secluded herself from the public eye before she entered politics in the late 1990s — when public nostalgia for her father emerged after the country's economy was hit hard by the Asian financial crisis.

She had since become an icon of South Korean conservatives, earning the nickname "Queen of Elections" for her ability to led her conservative party to win tight elections.

Park now becomes South Korea's third head of state to be jailed after leaving office.

Former presidents Chun Doo-hwan and Roh Tae-woo, both previously army generals, received a life sentence and a 17-year prison term, respectively, in 1996 on charges including treason and bribery. They were released in December 1997 on a special presidential amnesty.

Chun and Roh staged a 1979 coup that put Chun in power more than eight years after Park Chung-hee's death. Roh was elected president in 1987 after Chun's government caved to massive pro-democracy protests and accepted direct, free elections.

In 2009, prosecutors questioned former liberal President Roh Moo-hyun over corruption allegations, but they later closed the investigation after Roh leaped to his death.